CVEs / CVE-2026-3300
CVE-2026-3300: WPEverest Everest Forms Pro vulnerability
- critical 9.8 CVSS 3.1 (from the CNA)
- EPSS 39.1% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Description
The Everest Forms Pro plugin for WordPress is vulnerable to Remote Code Execution via PHP Code Injection in all versions up to, and including, 1.9.12. This is due to the Calculation Addon's process_filter() function concatenating user-submitted form field values into a PHP code string without proper escaping before passing it to eval(). The sanitize_text_field() function applied to input does not escape single quotes or other PHP code context characters. This makes it possible for unauthenticated attackers to inject and execute arbitrary PHP code on the server by submitting a crafted value in any string-type form field (text, email, URL, select, radio) when a form uses the "Complex Calculation" feature.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| WPEverest Everest Forms Pro | up to and including 1.9.12 | — |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 30 Oct 2026.
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-94 |
References
- CVE-2026-3300 on NVD
- https://everestforms.net/changelog/
- https://plugins.trac.wordpress.org/browser/everest-forms/tags/3.4.3/includes/class-evf-form-task.php#L584
- https://www.wordfence.com/threat-intel/vulnerabilities/id/389c0b89-e408-4ad5-9723-a16b745771f0?source=cve
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.